Alternator Mercury Marine Outboard Optimax 75HP 90HP 115HP 200HP 225HP 250HP 300HP 1.5L 3.0L New Aftermarket Part (Not Rebuilt/Refurbished/Repurposed) 1.5L 3.0L 92.9ci 185ci 75HP 90HP 115HP 200HP 225HP 250HP 300HP OEM(s): Delco Alternator Family: Delco 5SI Voltage: 12 Volts Amps: 50 Amps Regulator Position: 9:00 Polarity: Negative Output Stud Dimensions: M6-1.0 Approximate Weight: 7.46 lbs / 3.39 kg Notes: Delco Alternators #19020704 & 19020707 & Mercury Marine #875286A1, 881247A1 & 889956, Includes (1) 10mm Unthreaded Mounting Hole in 31mm Mounting Foot, (1) 10mm Unthreaded Mounting Hole in Mounting Ear& a 4 Groove Serpentine Pulley Replaces ARCO MARINE20850 DELCO 19020704, 19020707 MERCURY MARINE 875286A1, 875286T, 881247A1, 889956 Please verify this is the right part number before ordering